.header {
  width: 100%;
  border-bottom: 1px solid #eee;
  height: 80px;
  position: sticky;
  top: 0;
  left: 0;
  z-index: 99;
  background-color: #fff;
  .logo {
    width: 100px;
    text-align: left;
    cursor: pointer;
  }
  .menu {
    flex: 1;
    font-size: 16px;
    text-align: center;
  }
}
